Sash ventilator



June 30, 1931. c. H. LARsoN sAsH VENTILATOR Filed oct. e. 192:3`

V Inc/sf l Carl J Larson.

` was Patented June 30, 1931 UNITED STATES CARL H. LARsoN,

o i ELKHART, INnrAn'A, AssIeNon To THE iin-Lann COMPANY, enrcaso,v ILLINOIS, `Aconronlurroiv or ILLINOIS APATEN"r OFI-*ICE f4 sAsn Vv'nN'rrLafroR Application fiieaoctoher e, 192s. serial No. 310,754.

.This invention has to do with sash venti lators ofthe type in which the ventilator is mounted in the rail ofthe sash.` d

The object'of the invention is to provide an improved ventilator'of the type described which is inexpensive to manufacture, is' easy to install, will it into rails of different sizes, will not stick in `opening or closing, effects a double screening of the air when open, and

effects a double closure of theair openings. Y l

i ltheside walls of the rail. The shifting is when closed. d p i In order that 'the invention may be readily understood, two different forms of the same are presented herein, but it will of course be appreciated that such forms have been chosen merely for the purpose of exemplification and that the invention is capable of embodimentin other structurally 'modified' forms coming equally within the scope of the claims.

In the accompanying drawings: Y Fig. 1 is a fragmentary side View of a sash r'ail equipped with the ventilator; Fig. 2 is a horizontal longitudinal section,

' taken on the line 2-2 of Fig. 1;

Fig. 3 is a vertical transverse section, taken on the line 3-3 of Fig. 1`; and

Fig. 4 is a view corresponding to Fig.` 3, showing a slightly modified form of the ventilator.

The ventilator shown in Figs. 1, 2 and 3 of the drawings is located in the lower rail 10 of a hollow sheet metal sash. The side walls 11 and 12 of the rail are provided with openings 13 and 14 through which ventilation is effected. Two flat sheet metal plates 15 and 16 are positioned within the rail 10 against the walls 11 and 12 and are provided with openings 17 and 18 which register with the openings 13 and 14 when the ventilator is open. The inner faces of the plates 15 and 16 are covered with wire screens 19 and 20, and the edges of the plates are provided with inturned upper flanges 21 and 22Vand inturned lower flanges 23 and 24, which 'Ihe plates 15 and 16 are pressed resiliently v against the inner faces 0f the side walls 11 and 12 of the rail by means of compressed coil springs 27,1and are caused to shift in unison longitudinally `within 4the rail p by means of sleeves 28 on the plate 15 which vtelescope with studs 29 'on the plate 16. The

sleeves 28V and studs 29 also serve to position` the springs 23. 'd

By shifting the plates 15 `and 16.longitudinally within the rail, the openings A17 'and- 18 in the plates may be moved into or out ofregisterfwith theopenings 13 and 14 `in effected means of a finger-piece 30, which finger-piece has a screw-threaded shank 31` which entends through a horizontal slot 32" screw the finger-pieceBO` and slide the plates 15 `and 16 out ofione end-vof the rail," which end may be opened for that purpose. Since the plates 1,5 and16 are pressed resiliently bythe springs 27 against` the inner faces of the walls of the rail, the same plates may be used in rails of diiferent sizes.

In Fig. 4 is shown a slightly modified: form of the ventilator-imwhich the lowerjflange 34 on the plate 35 which lslides against the inner facemof the `outsidewall 36 of the rail is madeofsuch length as` to overlapV the4V lower flange 37 Aen the other plate and isarranged at aninclination, whereby to provide Va drainage surface sloping towardthe outside openings. y l, i

1. In algsash` vventilatora` hollow sheet metal sash'rail provided with openings in the walls thereof, two spaced sheet `metal plates positioned in the rail against the walls thereof and provided with openings therein for-registration with the yopenings, in the walls ofthe rail, spring means for maintaining the plates against the walls ofthe rail independent of the distance between the walls, and means for` shifting` the plates to move the ,openings therein into or out of,V register with the openings inthe walls of the rail. i

2,.v In `a sash ventilator, axhollow .sheet metal sash rail provided VVwith Vopenings in the ister withfthe openings in the walls offthe rail.

3. In a sash ventilator, a hollow sheet metal sash rail provided with openingsfin the walls thereof, two spaced sheet metal plates positioned in the rail-againstth'eiwalls v thereof and provided with openings therein for registration with theopenings in the` walls-of 'the railfspring means for maintaini ingthe` plates inproperly spaced relation, and a` removablev linger-piece connected with one'offthe 'plates and extending through a slot in one of the Walls of the, rail `forshifting both of theV plates to move the openings therein into or out'of register with theopenings in the walls ofthe rail, said finger piece limiting the shifting movement of the plates, and said plates -beingshiftable beyond such limitwhenv the `finger piecey is removed whereb-yto effect the `removal of the plates through one end of ith'e rail.

V4Q'In a sash ventilator, a hollow sheet" metal sash rail provided with openings in the walls thereof, two spaced sheet metal plates positioned in the railagainst the walls thereofand providedwith-openings therein for' registrationwith the openings inthe walls of the rail, springs for pressing the plates resi-liently againstthe wallsi of the rail, telescopingmembers secured to -the plates for causingl the plates to shift 4in unison, and a finger piece connected with :one of. the plates through a slot-in one; of the wallsI of the'rail for shifting the plates to movethe openings therein into or outof register with Vthe Y openings in the walls of the rail.

5. In a sash ventilator, ahollow sheet metal sash rail provide'dwithopenings in thev wallsA thereof,`two spaced sheetA 'metal plates positioned in the rail against the walls thereof and provided with openings therein for registration with the openingsin the walls of the rail, compressed coil'springs between the plates for pressing the platesre` siliently against-the walls of the rail, telescoping members `connected with the lates for positioning the coil springs, an eX- teriorly accessible means tor shifting the plates yto move the openings thereininto or out of register with the openings in the walls of the rail.

6. Ina sash ventilator, a hollow sheet* metalisash rail provided with openingsv in the walls thereof, two'spaced sheet metal plates positioned in the rail. againstv the walls thereof and provided with openings therein for registration with the openings in the walls of the rail, inturned flanges along the upper and lower edges of the plates for sliding engagement with the upper and lower walls of the rail, wire screens attached to the plates over the openings therein, and means forshifting the plates to move the openings thereinV into or out of register with the openings in the walls of the rail.v y

7. In a. sash ventilator, a hollow sheet metal sash rail provided with openings in the.` Walls-l-thereof, two -spaced sheet metal plates positioned in the rail against the walls thereof an'diiprovidedllwith openings therein 8 for registration with the openings inthe wallsl of. .the rail, inturnedA-flanges along the upperand lower edges ofthe platesfor slidingengagement withthe upper and'lower walls of the rail,` wirey screens attached to the plates over the openingsV therein,- and means' for shifting 4the plates to movel the openings therein into or out of register with" the openings inthe wallsl of the rail, one of said lower' flanges being `arranged at an inclination -toI effect drainage toward the outside openings.

In testimony whereof-I have hereunto subscribed my name.

CARL't H. LARSON. 

